Updated Bounds on Axion-Like Particle Dark Matter with the Optical MUSE-Faint Survey

被引：0
|
作者：
Todarello, Elisa [1 ,2 ]
机构：
[1] Turin Univ, Dept Phys, Via Giuria 1, I-10125 Turin, Italy
[2] Ist Nazl Fis Nucleare, Sez Torino, Via P Giuria 1, I-10125 Turin, Italy
来源：
ANNALEN DER PHYSIK | 2024年 / 536卷 / 01期
关键词：
axion-like particle decay into photons; axion-like particle dark matter; dwarf spheroidal galaxy; GALAXIES; SCULPTOR;
D O I：
10.1002/andp.202300042
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Bounds are derived on the axion-like particle (ALP) to two-photon coupling in the mass range 2.65 - 5.27 eV. The bounds are obtained by searching for the signal from ALP decay in the Multi Unit Spectroscopic Explorer (MUSE) observations of five dwarf spheroidal galaxies, under the assumption that ALPs constitute the dark matter component of the haloes. These bounds are of the same order and improve on the robustness of those of Regis et al., (2021), and currently represent the strongest bounds within the considered mass range.
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页数：6
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